It is currently 19 Oct 2017, 15:41

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

To develop more accurate population forecasts, demographers

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 01 Oct 2013
Posts: 10119

Kudos [?]: 261 [0], given: 0

Premium Member
Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 06 Oct 2016, 01:04
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

Kudos [?]: 261 [0], given: 0

VP
VP
avatar
S
Joined: 09 Jun 2010
Posts: 1403

Kudos [?]: 158 [0], given: 916

Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 06 Oct 2016, 05:54
english_august wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical


honestly, I do not understand the application of conditional mode to this problem.

I think A is wrong because A offer 2 possibilities,
more than they have to know
more than they know
so, A is considered ambiguity and is incorrect.

choice D is very clear because "they do" means "they know".

og explanation sometime is not enough. that is why we are here.
_________________

visit my facebook to help me.
on facebook, my name is: thang thang thang

Kudos [?]: 158 [0], given: 916

Intern
Intern
avatar
Joined: 06 Sep 2015
Posts: 29

Kudos [?]: 3 [0], given: 37

Location: India
Schools: ISB '18
GMAT 1: 660 Q50 V28
Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 20 Oct 2016, 21:08
I rejected choices with "would" because "would" conveys a sense of possibility but question stem conveys the meaning that "demographers have to know a great deal", its not a possibility or a choice.

Please explain the gap in my understanding.
_________________

What gets measured, gets managed

Kudos [?]: 3 [0], given: 37

VP
VP
avatar
S
Joined: 09 Jun 2010
Posts: 1403

Kudos [?]: 158 [0], given: 916

Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 13 Dec 2016, 09:00
hbs2012 wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic detriments of fertility.

(A) have to know a great deal more than now about the social and economic
(B) have to know a great deal more than they do now about the social and economical
(C) would have to know a great deal more than they do now about the social and economical
(D) would have to know a great deal more than they do now about the social and economic
(E) would have to know a great deal more than now about the social and economical

Question 32 Set 1

help

why A is wrong?
A means
demographer have to know more than they HAVE TO KNOW NOW. this is not logic
D means
demographer have to know more than they do/ know now. remember "do" can not refer to "have to" because "have to" now works as helping verb. so "do" grammatically refer to "know" .

am i correct?
_________________

visit my facebook to help me.
on facebook, my name is: thang thang thang

Kudos [?]: 158 [0], given: 916

Manager
Manager
avatar
B
Joined: 17 Sep 2016
Posts: 196

Kudos [?]: 6 [0], given: 29

Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 18 Feb 2017, 04:03
Hi mikemcgarry,
How are you ?

I know here is a video to explain of this question on Magoosh, unfortunately, YOUTUBE is not available in China, I am afraid I need your further writing explanation.

My version, from O 16 # 61, is a little different with the initial poster, I found that last word of choice is economic , instead of economical

OG 16 # 61 version,
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
(A) have to know a great deal more than now about the social and economic
(B) have to know a great deal more than they do now about the social and economical
(C) would have to know a great deal more than they do now about the social and economical
(D) would have to know a great deal more than they do now about the social and economic
(E) would have to know a great deal more than now about the social and economic


I am struggling with A, D and E.
I can understand that comparison should be logical, meaning
for this case, the comparison is either future time VS present time, or future knowledge VS present knowledge,

Here is my reasoning , please point out my faults. thanks
A) have to know a great deal more than now about the social and economic
first, I think "have to know "is sensible, because it presents the necessary to get the knowledge in order to improve future accuracy.
second, I review choice A as omit, -- have to know a great deal more than( they know ) now.
"they" refers to demographers, know is a verb that appears preceding.

D) would have to know a great deal more than they do now about the social and economic
E) would have to know a great deal more than now about the social and economic
first, IMO, "would have to know" presents demographers' necessary in the future, I think of it as available as well.
second, both D and E have a comparison that "demographers have to know " VS "they know/do" .. I am not sure how should I distinguish D and E, because I think that E omits "they do".

Genuinely want your help

Thanks in advance

have a nice day
>_~

Kudos [?]: 6 [0], given: 29

Expert Post
Magoosh GMAT Instructor
User avatar
G
Joined: 28 Dec 2011
Posts: 4423

Kudos [?]: 8438 [0], given: 102

Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 20 Feb 2017, 11:27
zoezhuyan wrote:
Hi mikemcgarry,
How are you ?

I know here is a video to explain of this question on Magoosh, unfortunately, YOUTUBE is not available in China, I am afraid I need your further writing explanation.

My version, from O 16 # 61, is a little different with the initial poster, I found that last word of choice is economic , instead of economical.

OG 16 # 61 version,
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
(A) have to know a great deal more than now about the social and economic
(B) have to know a great deal more than they do now about the social and economical
(C) would have to know a great deal more than they do now about the social and economical
(D) would have to know a great deal more than they do now about the social and economic
(E) would have to know a great deal more than now about the social and economic


I am struggling with A, D and E.
I can understand that comparison should be logical, meaning
for this case, the comparison is either future time VS present time, or future knowledge VS present knowledge,

Here is my reasoning , please point out my faults. thanks
A) have to know a great deal more than now about the social and economic
first, I think "have to know "is sensible, because it presents the necessary to get the knowledge in order to improve future accuracy.
second, I review choice A as omit, -- have to know a great deal more than( they know ) now.
"they" refers to demographers, know is a verb that appears preceding.

D) would have to know a great deal more than they do now about the social and economic
E) would have to know a great deal more than now about the social and economic
first, IMO, "would have to know" presents demographers' necessary in the future, I think of it as available as well.
second, both D and E have a comparison that "demographers have to know " VS "they know/do" .. I am not sure how should I distinguish D and E, because I think that E omits "they do".

Genuinely want your help

Thanks in advance

have a nice day
>_~

Dear zoezhuyan,

How are you my friend? I'm happy to respond. :-)

My friend, you are correct: other sources on the web list choice (E) as "economic," not "economical." I changed the original post.

What's wrong with (A) is subtle. The sentence begins:
To develop more accurate population forecasts . . .
The implication is that the forecast now are not accurate, at least not as accurate as they could be. This is suggesting a contrary-to-fact situation, the existence of something better than what exists now. In fact, the whole sentence has this contrary-to-fact tone, comparing what would be ideal to what is true now. All of this requires the verb "would have." This has a hypothetical implication. The verb "have" sounds too factual, as if all these ideal conditions were already in existence. This is why (A) is wrong.

To understand the difference between (D) and (E), think about a simpler example.
Version #1: In order to get a perfect score on the GMAT Verbal, you would need to know more than now.
Version #2: In order to get a perfect score on the GMAT Verbal, you would need to know more than you know now.
Version #1 sounds awkward. Yes, we know what the speaker is trying to say, but it sounds awkward. It sounds as if we are comparing knowledge to the location in time known as "now." It's awkward in a bizarre way. By contrast, version #2 is flawless.

Much in the same way, (E) is a a bit awkward, and (D) is clear and flawless. Thus, (D) is the better answer of these two and the best of the five.

Does all this make sense, my friend?
Mike :-)
_________________

Mike McGarry
Magoosh Test Prep

Image

Image

Kudos [?]: 8438 [0], given: 102

Manager
Manager
avatar
B
Joined: 17 Sep 2016
Posts: 196

Kudos [?]: 6 [0], given: 29

Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 20 Feb 2017, 21:21
mikemcgarry wrote:
Dear zoezhuyan,

How are you my friend? I'm happy to respond. :-)

My friend, you are correct: other sources on the web list choice (E) as "economic," not "economical." I changed the original post.

What's wrong with (A) is subtle. The sentence begins:
To develop more accurate population forecasts . . .
The implication is that the forecast now are not accurate, at least not as accurate as they could be. This is suggesting a contrary-to-fact situation, the existence of something better than what exists now. In fact, the whole sentence has this contrary-to-fact tone, comparing what would be ideal to what is true now. All of this requires the verb "would have." This has a hypothetical implication. The verb "have" sounds too factual, as if all these ideal conditions were already in existence. This is why (A) is wrong.

To understand the difference between (D) and (E), think about a simpler example.
Version #1: In order to get a perfect score on the GMAT Verbal, you would need to know more than now.
Version #2: In order to get a perfect score on the GMAT Verbal, you would need to know more than you know now.
Version #1 sounds awkward. Yes, we know what the speaker is trying to say, but it sounds awkward. It sounds as if we are comparing knowledge to the location in time known as "now." It's awkward in a bizarre way. By contrast, version #2 is flawless.

Much in the same way, (E) is a a bit awkward, and (D) is clear and flawless. Thus, (D) is the better answer of these two and the best of the five.

Does all this make sense, my friend?
Mike :-)


better after reading your response.
I think I interpreted deeper,
thanks so much indeed mikemcgarry

Have a nice day
>_~

Kudos [?]: 6 [0], given: 29

Manager
Manager
avatar
B
Joined: 23 Dec 2013
Posts: 235

Kudos [?]: 12 [0], given: 21

Location: United States (CA)
GMAT 1: 760 Q49 V44
GPA: 3.76
Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 19 May 2017, 08:41
english_august wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economic


A "Have to know" is indicative, but the sentence demands a subjunctive verb "would."
B "Have to know" is indicative, but the sentence demands a subjunctive verb "would."
C "Economical" means "thrifty," not "pertaining the economy."
D Correct.
E Knowledge ("would have to know") cannot be compared to the present moment ("now"). This structure is neither parallel nor logical.

Kudos [?]: 12 [0], given: 21

Director
Director
User avatar
G
Joined: 26 Oct 2016
Posts: 694

Kudos [?]: 179 [0], given: 855

Location: United States
Concentration: Marketing, International Business
Schools: HBS '19
GMAT 1: 770 Q51 V44
GPA: 4
WE: Education (Education)
Re: To develop more accurate population forecasts, demographers [#permalink]

Show Tags

New post 13 Aug 2017, 21:59
If both verbs are in the present tense -- demographers HAVE TO KNOW more than they DO now -- the implication is that both actions are happening in the present.
The result is a nonsensical meaning: how can demographers KNOW more than they KNOW?
To make it clear that the situation is HYPOTHETICAL, the subjunctive is needed: demographers WOULD HAVE TO KNOW more than they DO now.
One purpose of the subjunctive is to convey a situation that is CONTRARY-TO-FACT or HYPOTHETICAL.
The intended meaning here is to compare what demographers KNOW NOW -- in reality -- to what they WOULD HAVE TO KNOW -- hypothetically -- to develop more accurate forecasts.
To make it clear that one action is real while the other is hypothetical, the hypothetical action must be in the subjunctive mood (WOULD have to know). Eliminate A and B.

In C, economical -- which means thrifty -- does not convey the intended meaning. The needed word here is ECONOMIC (which means related to the economy). Eliminate C.

In E (demographers would have to know a great deal more than NOW), it is unclear what is being compared. To make it clear that a hypothetical action is being compared to an actual action, we need the contrasting verbs offered by D: demographers WOULD HAVE TO KNOW a great deal more than they DO [know] now. Eliminate E.
The correct answer is D.
_________________

Thanks & Regards,
Anaira Mitch

Kudos [?]: 179 [0], given: 855

Re: To develop more accurate population forecasts, demographers   [#permalink] 13 Aug 2017, 21:59

Go to page   Previous    1   2   3   4   [ 69 posts ] 

Display posts from previous: Sort by

To develop more accurate population forecasts, demographers

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.